Honeywell T8000C User manual

OWNER’S GUIDE
T8000C
Programmable Thermostat
69-1437EF

269-1437EF
Features
•Program up to four time periods and temperature settings to complement your lifestyle.
•Set different schedules for weekdays and weekends.
•Programs are permanently held in non-volatile memory in the event of a power failure.
•Indefinite temperature hold.
•Preprogrammed for your convenience.

369-1437EF
Welcome to the world of comfort and energy savings with your new Honeywell programmable
thermostat.
Your new ProgrammableThermostat is designed to provide you with reliable, precise temperature
control.When you follow the simple programming instructions in this manual, your thermostat
automatically controls the temperature in your home, saving energy and allowing you to awake (or
return home) to a comfortable level of heating or air conditioning.
Direct questions concerning the operation of this thermostat to Honeywell Customer Assistance at
1-800-468-1502, Monday-Friday, 7:00 a.m.-5:30 p.m., Central time.

469-1437EF
The thermostat display shows day, time,
program period, and temperature.
The thermostat can be set for four time
periods per day for weekdays and week-
ends.
Before programming the thermostat, you can
use the following chart on page 5, to organize
your program schedule.
Fill in the times and temperatures you desire for
weekdays and weekends.If you decide not to
program the thermostat, it will follow the
preprogrammed time and temperature settings
shown inTable 1.
Table 1. PreprogrammedTime
andTemperature Settings.
Period Time Heat Setpoint Cool Setpoint
Wake 6:00 AM 21°C
(70°F ) 26°C (78°F )
Leave 8:00 AM 17°C
(62°F ) 29°C (85°F )
Return 6:00 PM 21°C
(70°F ) 26°C (78°F )
Sleep 10:00PM 17°C
(62°F ) 28°C (82°F )

569-1437EF
Program Schedule
Weekday StartTime HeatingTemperature CoolingTemperature
Wake ________ ________ ________
Leave ________ ________ ________
Return ________ ________ ________
Sleep ________ ________ ________
Weekend StartTime HeatingTemperature CoolingTemperature
Wake ________ ________ ________
Leave ________ ________ ________
Return ________ ________ ________
Sleep ________ ________ ________
WAKE and RETURN start times should include extra lead time, based on outside temperature and
equipment response time, to give your equipment a head start to heat or cool the house.The
temperatures cannot be set any higher than 37°C (99°F) or any lower than 4°C (40°F).

669-1437EF
Programming
The thermostat is flexible and can be program-
med for different schedules for weekdays and
weekends, to meet your lifestyle needs.
Use the personal Program Schedule for
planning your time and temperature settings for
various times of the day. See page 5.
Four time periods are available during week-
days and weekends —WAKE, LEAVE, RE-
TURN, and SLEEP.
WAKE is the time the thermostat turns on the
heating/cooling equipment after an energy
saving period.When deciding what time to
set for your WAKE period, include extra
lead time, depending on the outside
temperature and your equipment response
time, to give the equipment a head start to
heat or cool the house before you get up.
(This will be a higher temperature during
heating season, and a lower temperature
during cooling season.)
LEAVE is the time period you can set for an
energy-saving temperature while you are
away at work or school.(This will be a
lower temperature during heating season,
and a higher temperature during cooling
season.)
RETURN is the time the thermostat turns on
the heating/cooling equipment after an
energy saving period.When deciding what
time to set for your RETURN period,
include extra lead time, depending on the
outside temperature and your equipment
response time, to give the equipment a
head start to heat or cool the house before
you arrive home.

769-1437EF
SLEEP is the time period you can set for an
energy-saving temperature while you are
sleeping.(For more comfortable sleeping,
some people choose not to raise the cool
temperature during the night.)
IMPORTANT
Always press the keys with your
fingertip or similar blunt tool.Sharp
instruments like pens and pencil
points can damage the keys.
Setting the Current Time and Day
1. To Set Current Time Press Select twice.
Press ▲ or ▼
to set current
time.
While setting the current time, the word SET is
flashing.
2. To Set Day of Week.Press Select again.
Press ▲ or ▼
to set current
day.
To use the preprogrammed time and tempera-
ture settings (see Table 1), press Hold now, to
exit the programming mode.To enter a custom
program to fit you life style, continue to step 3.
M12591A
SET
PM
M12593A
MON

869-1437EF
Setting the Weekday Program
Slide the SYSTEM switch to the position, heat
or cool, you want to program. A flame (heat-
ing) or a snowflake (cooling) will appear in
the lower right corner of the display, when
setting the program temperature.
3. Wake
a. Press Select. Press ▲ or ▼to set
Wake
time.
b. Press Select. Press ▲ or ▼to set
Wake
temp-
erature.
4. Leave
a. Press Select. Press ▲ or ▼to set
Leave
time.
b. Press Select. Press ▲ or ▼to set
Leave
temp-
erature.
5. Return
a. Press Select. Press ▲ or ▼to set
Return
time.
M12624A
M12626A
M12628A
M14205A
M14203A

969-1437EF
b. Press Select. Press ▲ or ▼to set
Return
temp-
erature.
6. Sleep
a. Press Select. Press ▲ or ▼to set
Sleep
time.
b. Press Select. Press ▲ or ▼to set
Sleep
temp-
erature.
Setting the Weekend Program
7. Wake
a. Press Select. Press ▲ or ▼to set
Wake
time.
b. Press Select. Press ▲ or ▼to set
Wake
temp-
erature.
M12630A
M12632A
M14204A
M14207A
M14206A

10 69-1437EF
8. Leave
a. Press Select. Press ▲ or ▼to set
Leave
time.
b. Press Select. Press ▲ or ▼to set
Leave
temp-
erature.
9. Return
a. Press Select. Press ▲ or ▼to set
Return
time.
b. Press Select. Press ▲ or ▼to set
Return
temp-
erature.
10. Sleep
a. Press Select. Press ▲ or ▼to set
Sleep
time.
b. Press Select. Press ▲ or ▼to set
Sleep
temp-
erature.
M12634A
M12636A
M12638A
M14211A
M14210A
M14212A
SAT SUN

11 69-1437EF
11. Press Select. End is displayed. Program-
ming is complete.The thermostat will
revert to dis-
playing the
current day
time and temp-
erature in five
seconds.
Temporary Temperature Hold
1. Press ▲ or ▼key to set a temporary
temperature
setting.
NOTE: The temporary temperature setting
remains in effect until the next program
period.To cancel press Hold twice.
Indefinite Temperature Hold
The Hold key allows you to indefinitely hold a
temperature. When Hold is active, the letters
Hld are displayed continuously. Hold can be
canceled by pressing the Hold key again.
1. Press Hold
2. Press ▲ or ▼ key to set indefinite
temperature
setting.
M12511A
M14214A
TEMPORARY
WED
PM
M14213A

12 69-1437EF
Setting System and Fan
Use the SYSTEM and FAN switches to change
the settings.
SYSTEM settings control the thermostat
operation as follows:
Heat:The thermostat controls the heating.
Off: Both the heating and cooling are off.
Cool:The thermostat controls the cooling.
Slide the SYSTEM switch in the lower right
corner of the thermostat to select the desired
system setting.
FAN settings control the system fan as follows:
On: Fan operates continuously.
Auto:Fan operates with equipment.
Slide the FAN switch in the lower left corner of
the thermostat to select the desired fan setting.
Heat and Cool Indicators
Indicates a call for heat.
Indicates a call for cool.
NOTE: In the programing mode the and
indicate system setting.

13 69-1437EF
Minimum Off-Timing
A minimum off-timer in the T8000C assures that
the compressor does not come on again for at
least five minutes after it turns off.The minimum
off-timer is triggered when the compressor turns
off and when the SYSTEM switch position is
changed. If the compressor turns off when the
setpoint is changed, the minimum off-timer is
triggered. Power interruption and power
restoration also trigger the minimum off-timer.
The minimum off-timer operates in cooling on
the T8000C.A flashing snowflake indicates
the minimum off time is in effect.

14 69-1437EF
Troubleshooting Guide
(continued)
Symptom Action
Display does not come on. •Check if the thermostat is mounted and latched on the
wallplate—mount and latch the thermostat on the
wallplate.
•Check if the circuit breaker is tripped—reset the circuit
breaker.
•Check if the fuse is blown—replace the fuse.
•Check if the switch at the equipment is in the Off
position—set to the On position.
Temperature settings do not
change (Example: cannot set the
heating higher or the cooling lower).
•Check that the temperature setpoints are: between 4 to
37°C (40 to 99°F ).

15 69-1437EF
Troubleshooting Guide (continued).
(continued)
Symptom Action
Heating does not come on. •Check if the circuit breaker is tripped—reset the circuit
breaker.
•Check if the fuse is blown—replace the fuse.
•Check if the switch at the equipment is in the Off
position—set to On position.
•Wait five minutes for the system to respond.
•Set SYSTEM switch to Heat.
Cooling does not come on. •Check if the circuit breaker is tripped—reset the circuit
breaker.
•Check if the fuse is blown—replace the fuse.
•Check if the switch at the equipment is in the Off
position—set to On position.
•Wait five minutes for the system to respond.
•Set SYSTEM switch to Cool.

16 69-1437EF
Troubleshooting Guide (continued).
Symptom Action
System on indicator
or is lit, but no warm or
cool air is coming from the registers.
Wait a couple minutes after seeing the flame or snowflake
and then check the registers.
System on indicator
is flashing Minimum off timer is in effect. Wait five minutes until the
minimum off timer is complete. See p[age 13 for minimum
off-timing description.

17 69-1437EF
Limited One-Year Warranty
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials,
under normal use and service, for a period of one (1) year from the date of purchase by the consumer.If, at any
time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at
Honeywell’s option) within a reasonable period of time.
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or
(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of
the malfunction, and mail it, postage prepaid, to the following address:
Honeywell Return Goods In Canada:
Dock 4 MN10-3860 Honeywell Limited/Honeywell Limitée
1885 Douglas Drive North Product Services ON15-FFE
Golden Valley, MN 55422 740 Ellesmere Road
Scarborough, Ontario M1P 2V9
This warranty does not cover removal or reinstallation costs.This warranty shall not apply if it is shown by
Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the
possession of a consumer.

18 69-1437EF
Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above.HONEY-
WELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL
OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY
WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not
allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT.THE
DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONEYEAR DURATION OF THIS
WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation
may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.
If you have any questions concerning this warranty, please write our Customer Assistance Center, Honeywell
1985 Douglas Drive North, Golden Valley, MN 55422 or call 1-800-468-1502, Monday-Friday, 7:00 a.m.to 5:30
p.m., Central time. In Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limitée, 35
Dynamic Drive, Scarborough, Ontario M1V 4Z9.

19 69-1437EF

Copyright © 2000 Honeywell All Rights Reserved ®U.S. Registered Trademark
69-1437EF 9-00 G.H. Printed in Mexico
Home and Building Control
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9
Home and Building Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
www.honeywell.com